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Mail Transfer Protocol (RFC0780)

IP.com Disclosure Number: IPCOM000003829D
Original Publication Date: 1981-May-01
Included in the Prior Art Database: 2019-Feb-14
Document File: 47 page(s) / 48K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

S. Sluizer: AUTHOR [+1]

Related Documents

10.17487/RFC0780: DOI

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 7% of the total text.

MAIL TRANSFER PROTOCOL Suzanne Sluizer and Jonathan B. Postel

RFC 780

May 1981 Information Sciences Institute University of Southern California 4676 Admiralty Way Marina del Rey, California 90291

(213) 822-1511

May 1981 RFC 780 Mail Transfer Protocol

TABLE OF CONTENTS

1. INTRODUCTION .................................................. 1

2. THE MTP MODEL ................................................. 2

3. BASIC MAIL .................................................... 4

3.1. Forwarding ............................................... 5 3.2. Source Routing ........................................... 6

4. MULTI-RECIPIENT MAIL .......................................... 8

4.1. Scheme Selection: MRSQ ................................... 8 4.2. Message Text Specification: MAIL ......................... 9 4.3. Recipient Specification: MRCP ........................... 10 4.4. Scheme Mechanics: Recipients First ...................... 10 4.5. Scheme Mechanics: Text First ............................ 12 4.6. Discussion .............................................. 12

5. SPECIFICATIONS ............................................... 16

5.1. MTP Commands ............................................ 16 5.1.1. Command Semantics ..................................... 16 5.1.2. Command Syntax ........................................ 18 5.2. MTP Replies ............................................. 22 5.2.1. Reply Codes by Function Group ......................... 23 5.2.2. Reply Codes in Numeric Order .......................... 24 5.3. Sequencing of Commands and Replies ...................... 25 5.4. State Diagrams .......................................... 28 5.5. Details ................................................. 30 5.5.1. Minimum Implementation ................................ 30 5.5.2. Transparency .......................................... 30 5.5.3. Sizes ................................................. 30

APPENDIX A: TCP ................................................. 32 APPENDIX B: NCP ................................................. 33 APPENDIX C: NITS ................................................ 34 APPENDIX D: X.25 ................................................ 35 APPENDIX E: Theory of Reply Codes ............................... 36

GLOSSARY ......................................................... 39

REFERENCES ....................................................... 42

Network Working Group S. Sluizer Request for Comments: 780 J. Postel ISI Replaces: RFC 772 May 1981

MAIL TRANSFER PROTOCOL

1. INTRODUCTION

The objective of Mail Transfer Protocol (MTP) is to transfer mail reliably and efficiently.

MTP is designed to be independent of the particular transmission subsystem and requires only a reliable ordered data stream channel. Appendices describe the use of MTP with various transport services. A Glossary provides the definitions of terms as used in this document.

An important feature of MTP is its capability to relay mail from one trans...

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